* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            background: #f5f7fc;
            color: #1a1a2e;
            line-height: 1.7;
            padding: 0;
            font-size: 16px;
        }
        a {
            color: #004b87;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: #e63946;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .header {
            background: linear-gradient(135deg, #0d1b2a 0%, #1b3a4b 100%);
            color: #fff;
            padding: 16px 0;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .my-logo {
            font-size: 1.9rem;
            font-weight: 900;
            letter-spacing: -0.5px;
            color: #fff;
            background: linear-gradient(135deg, #f9c74f, #f8961e);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            text-shadow: 0 2px 8px rgba(248, 150, 30, 0.3);
            transition: transform 0.25s ease;
        }
        .my-logo:hover {
            transform: scale(1.03);
            text-decoration: none;
        }
        .my-logo i {
            -webkit-text-fill-color: #fff;
            margin-right: 6px;
            font-size: 1.6rem;
        }
        .nav-wrapper {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .nav-list {
            display: flex;
            list-style: none;
            gap: 6px 18px;
            flex-wrap: wrap;
            align-items: center;
        }
        .nav-list a {
            color: #e0e8f0;
            font-weight: 500;
            font-size: 0.92rem;
            padding: 6px 2px;
            border-bottom: 2px solid transparent;
            transition: 0.2s;
        }
        .nav-list a:hover {
            color: #f9c74f;
            border-bottom-color: #f9c74f;
            text-decoration: none;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.6rem;
            cursor: pointer;
            padding: 4px 8px;
        }
        .hamburger:focus {
            outline: 2px solid #f9c74f;
        }
        .breadcrumb {
            background: #e9ecf3;
            padding: 10px 0;
            font-size: 0.85rem;
            border-bottom: 1px solid #d0d7e2;
        }
        .breadcrumb ol {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 6px 10px;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .breadcrumb li+li::before {
            content: "/";
            margin-right: 10px;
            color: #7a7f8c;
        }
        .breadcrumb a {
            color: #004b87;
        }
        .breadcrumb .active {
            color: #5a5f6b;
            font-weight: 500;
        }
        .hero {
            background: linear-gradient(145deg, #0b1a2a, #1f4a5e);
            color: #fff;
            padding: 40px 0 50px;
            margin-bottom: 30px;
        }
        .hero h1 {
            font-size: 2.6rem;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }
        .hero h1 i {
            color: #f9c74f;
            margin-right: 10px;
        }
        .hero p {
            font-size: 1.15rem;
            max-width: 780px;
            color: #d0deeb;
            margin-bottom: 20px;
        }
        .hero-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 20px 30px;
            font-size: 0.95rem;
            color: #b0c7d9;
        }
        .hero-meta i {
            margin-right: 6px;
            color: #f9c74f;
        }
        .main-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 35px;
            padding-bottom: 50px;
        }
        @media (max-width: 992px) {
            .main-grid {
                grid-template-columns: 1fr;
            }
        }
        .content h2 {
            font-size: 1.9rem;
            font-weight: 700;
            margin: 40px 0 16px;
            color: #0d1b2a;
            border-left: 5px solid #f8961e;
            padding-left: 16px;
        }
        .content h3 {
            font-size: 1.4rem;
            font-weight: 600;
            margin: 30px 0 12px;
            color: #1b3a4b;
        }
        .content h4 {
            font-size: 1.15rem;
            font-weight: 600;
            margin: 20px 0 8px;
            color: #2a4a5e;
        }
        .content p {
            margin-bottom: 18px;
            color: #1f2a3a;
        }
        .content ul,
        .content ol {
            margin: 0 0 20px 24px;
        }
        .content li {
            margin-bottom: 8px;
        }
        .highlight-box {
            background: #eef3fa;
            border-left: 4px solid #f8961e;
            padding: 18px 24px;
            border-radius: 8px;
            margin: 24px 0;
        }
        .highlight-box strong {
            color: #0d1b2a;
        }
        .table-wrap {
            overflow-x: auto;
            margin: 24px 0;
            border-radius: 12px;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
        }
        table {
            width: 100%;
            border-collapse: collapse;
            background: #fff;
            font-size: 0.95rem;
        }
        th {
            background: #0d1b2a;
            color: #fff;
            padding: 12px 16px;
            text-align: left;
            font-weight: 600;
        }
        td {
            padding: 11px 16px;
            border-bottom: 1px solid #e2e6ee;
        }
        tr:nth-child(even) {
            background: #f8faff;
        }
        tr:hover td {
            background: #eef3fa;
        }
        .img-wrapper {
            margin: 28px 0;
            border-radius: 14px;
            overflow: hidden;
            box-shadow: 0 6px 24px rgba(0, 0, 0, 0.08);
        }
        .img-wrapper figcaption {
            background: #f0f4fa;
            padding: 10px 18px;
            font-size: 0.88rem;
            color: #2a4050;
            font-style: italic;
            border-bottom: 1px solid #dce2ec;
        }
        .sidebar {
            background: #fff;
            border-radius: 16px;
            padding: 24px 20px;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
            position: sticky;
            top: 100px;
            align-self: start;
        }
        .sidebar h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: #0d1b2a;
            margin-bottom: 14px;
            border-bottom: 2px solid #f9c74f;
            padding-bottom: 8px;
        }
        .sidebar ul {
            list-style: none;
            padding: 0;
        }
        .sidebar li {
            margin-bottom: 10px;
        }
        .sidebar a {
            color: #004b87;
            font-weight: 500;
            display: block;
            padding: 6px 0;
            border-bottom: 1px solid #edf0f6;
        }
        .sidebar a:hover {
            color: #e63946;
        }
        .search-box {
            background: #f0f4fa;
            border-radius: 40px;
            display: flex;
            align-items: center;
            padding: 2px 2px 2px 18px;
            margin-bottom: 24px;
            border: 1px solid #d0d7e2;
            transition: 0.2s;
        }
        .search-box:focus-within {
            border-color: #f8961e;
            box-shadow: 0 0 0 3px rgba(248, 150, 30, 0.15);
        }
        .search-box input {
            flex: 1;
            border: none;
            background: transparent;
            padding: 12px 0;
            font-size: 0.95rem;
            outline: none;
            color: #1a1a2e;
        }
        .search-box button {
            background: #f8961e;
            border: none;
            color: #fff;
            padding: 10px 22px;
            border-radius: 40px;
            font-weight: 600;
            cursor: pointer;
            transition: 0.2s;
            font-size: 0.95rem;
        }
        .search-box button:hover {
            background: #e63946;
        }
        .rate-section,
        .comment-section {
            background: #f8faff;
            border-radius: 14px;
            padding: 22px 24px;
            margin: 30px 0;
            border: 1px solid #e2e8f0;
        }
        .rate-section h3,
        .comment-section h3 {
            margin-top: 0;
            font-size: 1.3rem;
            color: #0d1b2a;
        }
        .star-rating {
            display: flex;
            gap: 6px;
            font-size: 1.6rem;
            color: #ccc;
            cursor: pointer;
            margin: 12px 0;
        }
        .star-rating i:hover,
        .star-rating i.active {
            color: #f9c74f;
        }
        .star-rating i {
            transition: 0.15s;
        }
        .rate-btn {
            background: #0d1b2a;
            color: #fff;
            border: none;
            padding: 10px 28px;
            border-radius: 40px;
            font-weight: 600;
            cursor: pointer;
            transition: 0.2s;
        }
        .rate-btn:hover {
            background: #f8961e;
        }
        .comment-section textarea {
            width: 100%;
            border: 1px solid #d0d7e2;
            border-radius: 12px;
            padding: 14px 16px;
            font-size: 0.95rem;
            resize: vertical;
            min-height: 90px;
            font-family: inherit;
        }
        .comment-section textarea:focus {
            outline: none;
            border-color: #f8961e;
        }
        .comment-btn {
            background: #004b87;
            color: #fff;
            border: none;
            padding: 10px 28px;
            border-radius: 40px;
            font-weight: 600;
            cursor: pointer;
            transition: 0.2s;
            margin-top: 10px;
        }
        .comment-btn:hover {
            background: #e63946;
        }
        .footer {
            background: #0d1b2a;
            color: #c8d4e0;
            padding: 40px 0 20px;
            margin-top: 40px;
            border-top: 4px solid #f8961e;
        }
        .footer-inner {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
        }
        @media (max-width: 640px) {
            .footer-inner {
                grid-template-columns: 1fr;
            }
        }
        .footer h4 {
            color: #f9c74f;
            font-size: 1.1rem;
            margin-bottom: 12px;
        }
        .footer a {
            color: #b0c7d9;
        }
        .footer a:hover {
            color: #f9c74f;
        }
        friend-link {
            display: block;
            background: #132433;
            padding: 16px 20px;
            border-radius: 12px;
            margin-top: 10px;
            font-size: 0.9rem;
        }
        friend-link a {
            display: inline-block;
            margin: 4px 12px 4px 0;
        }
        .copyright {
            text-align: center;
            padding-top: 24px;
            margin-top: 24px;
            border-top: 1px solid #1f3a4e;
            font-size: 0.85rem;
            color: #8899aa;
            max-width: 1200px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 20px;
            padding-right: 20px;
        }
        @media (max-width: 768px) {
            .nav-list {
                display: none;
                flex-direction: column;
                width: 100%;
                background: #0d1b2a;
                padding: 16px 0 20px;
                border-top: 1px solid #1f3a4e;
                margin-top: 12px;
            }
            .nav-list.open {
                display: flex;
            }
            .hamburger {
                display: block;
            }
            .header-inner {
                align-items: center;
            }
            .hero h1 {
                font-size: 1.8rem;
            }
            .hero p {
                font-size: 1rem;
            }
            .main-grid {
                gap: 20px;
            }
            .sidebar {
                position: relative;
                top: 0;
            }
            .my-logo {
                font-size: 1.4rem;
            }
        }
        @media (min-width: 769px) {
            .nav-list {
                display: flex !important;
            }
        }
        .author-badge {
            display: flex;
            align-items: center;
            gap: 14px;
            background: #eef3fa;
            padding: 12px 20px;
            border-radius: 40px;
            margin: 24px 0;
            font-size: 0.92rem;
        }
        .author-badge i {
            font-size: 1.8rem;
            color: #004b87;
        }
        .mt-1 {
            margin-top: 10px;
        }
        .mb-1 {
            margin-bottom: 10px;
        }
        .fw-700 {
            font-weight: 700;
        }
        .text-accent {
            color: #e63946;
        }